Stop mechanism



BEST ,AVAlLABLE COW Nov. 2 1926/ 1,605,425 4 J. B. BURTON STOP MECHANISM Filed May 7. 1926 2 Sheets-Sheet 1 INVENTOR fesse 3.315110 ATTORNEY BEST AVAILABLE COP\ Nov. 2 1926. f A 1,605,425

- J. B. BURTON STOP MECHANISM Filed May 7. 1926 2 Sheets-Sheet 2 ATTORNEY BEST AVAILABLE com NITED,JESTATES' Patented Nov. 2, 1926. f. i.

Jesse B; seamen, or vr-ArERBUaY; CONNECTICUT; nssienonro 'THE wArERBURY 'FARREL rounnny nnn M CEINEGOMPANY, or WATERBURY, connncrroirrfn coaronnrron'or CONNECTICUT. I 1

. s'ror MEcnANIsMi Application filed- May ;7 ,192j6i15eria1iNo, 107,320.

' This invention relates to a newfl and proved stop mechanism, that is particularly adapted for use as a part of a make and break connection mechanism between a, driv ng wheel and a shaft or the like, such mocha;

nism being commonly used on powerrpresses and similar 1nachines.--

a fl

It is the object of this invention; among other things to providein a device of this character means wherebyrthe friction 1necha-.

nismis first applied andtthereafter the meme ber uniting the driving. wheel and shaft, is withdrawn so as to bring the shaft'to' 'affull stop, and also whenstarting the .rotation 'of the shaft the friction mechanism.- is'firstlre: leased and then the uniting member is posif tioned-so as to' join the shaft and driving wheel. I i These objects, I accomplish by means of such structure and relative-arrangement of parts as will fully appear from the following specification and claims. v

Referring to the drawings; in which like numerals of reference designate like parts in the several figures:

Figure 1 is a side elevation of a portion of a machine having my new and improved stop mechanism attached thereto, the parts being in the ositions occupied by them when the clutch ever is in the path of the clutch key or dog; 7 Y I,

Figure 2 is a similar View, some of the parts being broken away for clearness and illustrating the clutch lever out of the. path of the clutch key; t I

Figure 3 is a front'elevation ofthe parts substantially as shown in Figure 1,' the parts in section being taken generally upon the plane indicated by line 83 in Figure 1;

Figure 4: is a fragmentary plan View, the part in section being taken generally on line l& of Figure 2; and Figure 5 is also a fragmentary plan view, the-parts in sectlon being taken generally on line 5-5 ofFigure 1.

My improve-d stop :mechanism is herein illustrated as applied to a power press, al-

though, of course, not limited thereto.

It is desirable with machines operating at a high speed thatthe moving parts come to a full stop in a predetermined position and begin to move again, and attain their maximum speed as-quickly as possible without friction upon-the-parts or shockto the mechanism ,Heretofore; it has, i been .-the practice in {stopping the press to withdraw the 'clut chukey QrIdOg land-i th n, appl th friction mechanism; andiin starting; the p re ss t te t c n ec i n b tve fiit vi wheel and the shaft before, releasing; the hit? tion. {Ehejes'ult (if thi fpracticejisithaujn stoppingtli'e [press no attempt is jmigide to pp y i f e d Q 2 1. 5 'lln i F af u il after-the key-Li's 'withdrawn'iror'rilthe driv ng wheel; hence there is iafbleitolbe'nconsiderable, rotation -o' f liaft afteif the withdrawal rofl 'the key tarting the press the clutch key having ormed a positive eon neetion betweenithe and wheel before released. .I In iboth ins'tanees the operations are faulty, forlisoiiiefclassesfif. machines in that the" shaft "not, stop uick enough a-fterbeingrelease from thje ri'yingwheel and 1 will no acquire its jfull speed or mo-. mentum quick; enough afterconnection with the driving whe'ehgowi'nglto the unreleased pressure of the-friction mechanism l ,In this invention I haveprovided a stop mechanism wherein the Y friction is applied before the key is withdrawn,- which j brings the shaft to-a quick stopland it is released before the connection is madebetween the shaftand driving wheel" so that the starting of the, shaft ,is almost instantaneous and without the drag of thefriction (thereon.

In the press herein shown, 10 designates the body, -11 the crank shaft rotatable therein, and'having a collar @12,.' within which is an annular groove 13, and'an axialslot 14 containing the clutch key or dog, 15. This key has a'recess 16 in the outer-edge thereof, and. under, the tension of a spring 17 is moved-normally ina direction parallel to the axis .ofthe shaft and awayfrom the body 10.- 1' Rotatablyfmounted upontheshatt 1 1 is the driving wheel 18, held against endwise movement in one direction by a collar 19. All. of the parts above described, are well knowninthe art and constitute no part of this present invention. 7 Y Y 1 Fixed tolthe body by'thebolts, 21 or the like is a-braoket 20 and on the bolt 22 therein is journaled' the clutch lever23, of the usual form and structure. The..outer end ofthis clutch lever is movable within: the annular groove 13 toward and away from the shaft 11, the outer pointed end thereof when in its up p'ositionzbeing in'the path of" the IGCQSSilG inthe key 15.

As shownin Flgure 3, the. outer end of the key 15 15 within the groove 24, in the inner face of the hub of the driving wheel 1't,'-niak-- mg a positive connection between the crank shaft and driving wheel-wh'ieh-nbw rotateas a unit.

Vllhen the clutchlever 23.is in the position substantially as shown in Figures" rand the outer end of the 'clutch'lever is in the P path of the recess16' in the key 15. Asthe lever engages the key' 'the' latter is moved axiallywithin the collar 12'andtheo1iter end;

thereof withdraiw'n from the groove -24;, thus' severing the connection between the driving wheel and shaft and the driving wheel-cuntinues its movement about the shaft'without' imparting movement. thereto,

Secured to t e. bracket 9... plate '25,, having a foot portion 26, between the arms of which passes the rod 27 thatis pivotally plate 32, having a recess in its inner face,

near the upper end with an endwall 33, which in one of its positions engages a notch 34 in the clutch lever 23 and holds" it in its down position, substantially as shown in Figure 2. This locking plate is thus held by the tension of a spring 35. The-angular. face 86' upon this locking plate is in the path of the roll 3,7, upon the rock arm 38 that is pivotally mounted upon the stud 39 fixed in the bracket 20. A handle 40. forms an extension of this rock arm and is shown herein as a separate element butit maybe integral with the rock arm if desired.

The extension rod 29 extends-throu h a slot 41 in the rock arm and the collar O is positioned thereunder.

In starting and stopping the press the operator manipulates the rock arm 38 through the handle. In Figure 1 the handle 40 is illustrated in its extreme up position with the inner face adjacent to the catch plate 12 fixed on the body 10, at which time the clutch lever 23 is in the path of the key 15'.

In Figure 2, the handle 10 is illustrated indown position and the upper edge thereof is held in such position by engagement with the shoulder 4:3 ujpon thecatch plate e2. While being moved to this position: the collar 30 is engaged by the rock, arm 38. and' the clutch ever is paired to its dorm positien throughthe rods-29 and 2'1 against the tension of the spring 28, and out of the path of the key 15. At this time there is a positive connection between the driving wheel 18 and crank shatt 1'1 and rotation is imparted to the other thereby. When'in its down position the clutch lever is locked against accidental upward movement by the locking late 32 under tension of the spring 35. Vhil'e" the arm re moves from its down to its up position, the roll 37 upon the rock arm v38 contacts with the angular face of the locking plate 32, causing the same to move upon its pivot mounting 31 and disengages the wall 33. from the clutch 3 1, thus I'eleasing the clutch lever from its locking mechanism and permitting the same to move upwardly under the tension of spring 28.

The friction mechanism comprises arms 44: and 15, each of which has ale-ether pad 46 or the like on its inner wall and are connected at; their outen'end's by the bolt 47, having the hand nut 18 threaded thereon, whereby wear of the parts is taken up, as well as providing means for, varying the extent of friction upon the collar 12. The stud 31, which lies within the notch 49 in the lower end of the arm 4 1 holds this arm against movement in one direction. -Friction arm 45 is formed with an extension 50 that terminates in a lug 51 having a pocket 52 in one face thereof. Into this pocket projects the upper end of a toggle link 53, the lower end of. which is pivotally connected to the rock arm'38 b 1 the stud 5 1.

In Figure 1 the upper end 0 the link 53 is in its extreme up position and the rock arm 38 and associated parts are held in this position by the spring 55. When so positioned the. friction arms 44 and 45 apply friction to the collar 12. This it will'be noted is at a time prior to the engagement of the key 15 with the clutch lever 23. When the handle 10 is in its down position, the upper end of the link 53 is also in its down position and therefore applies no tension to the friction arms, which are thereby released from their frictional engagement with the collar 12. In Figure 1 the full lines illustrate the extreme up position of the handle 40, the broken lines 56, its extreme down po sition, and the broken lines 57, an interme diate position, that is, when the rock arm 38 first engages the collar 30. During the movement of the handle 10 between the pofil I sitions 57 and 56 the clutch lever 23 is being withdrawn as above. described. During this movement the link 53 is pulled downwardly, and relieves the pressure upon the arm 45 and through it, upon the arm 14:. The friction of these arm's upon the collar 12 is thus released before the clutch lever 23 is moved outof'the path of the key15; Thus, it will be seen that the brake mechanism is applied i i f ta the key" withdrawn the e ft rebetv e driving wheel and is taken on just before the key is r'eleased by the clutch lever,*to' form a positive connection between the plate integral therewith "withinmy invention; and

these and other ways, the' detailsofniy and scope of the appended'claims; :Wh aimie l '1. InFa'make an connection between: parts ,a mechanism for applying friction to'one of the parts; and means for operating jthe'friction mechanisrn' wh reby ';it apply friction to 'one' of the parts'priorjtq such movementof the movable-111mb will. b e gtle 12- n .c m'l? ne l ffit h l o tablyjmeun ed" t erebn a n v l T her f rfOrming'afi operative connection between the' shaftean'd wheel {a friction mechanism to eoi t rol 'tll jmjovcmentf'of' the shaft; L means" for" fnctuating the I movable member 'to'ffor'm a make and break con nection betweeni'the shaft and wheel; and means for! actuating'the friction mechanism whereby itwill apply friction'to. retard the movement of the shaft prior to .the initiation of themovement of theinovable member to break the connecti0n between the shaft and wheeL 3. In a make and break mechanism of the character described jhaving two operative parts; a movable 'rnemberfor forming a connection between the parts; amechanism for applying friction to one of the parts;

and means for operating the frictionmecha connection betw een,such parts. no

nism whereby it will apply friction to one of the parts prior to such movement ofthe movable member as will break the. connection therebetween, and release such friction priorto the movement of such movable memher to form a. connection between the parts.

4, In a make and break mechanism of the character described having two 'operative par movable member for forming a connection between the .parts; a mechanism for applying friction to one of the parts and means for operating the friction mechanism to apply friction to oneof the parts prior to such movement of the movable member as will break the connection therebetweenland release such friction prior to. the movement of the movable member to form an operative 5. In a make and break mechanism of the character described having two operative parts; a movable member for forming a connection between the parts; a lever for actuatingthe movable member inone direction; mechanism for'applying friction 'toone of invention may be: modified within the spirit e I V actuating j the movable member in-0ne =di'- character described having two operative parts; a movable member fonforming BEST AVAILABLE COP\ the parts means for actuating the lever in one direction tom ove the same-out of the path ofthe movahlemember; and independent mea'ns'between the lever actuating means and the F friction mechanism 1 whereby *movea 1 merit thereof; will in part tioni r'nechainsm.

control such fric- '6. Ina m the and break mechanism ofv the l' character described having two opelative parts a "movable 1 member for "forming: a

connection between the parts; a lever for rection a m'echanism for applying ,lfrictionto one of the parts ;"means, comprising inpart arock-member, for actuating the levernecti'onbetween theparts; a lever for actu- I ating the n iovable member in one direction; a mechanism forapply'ing frictibn" toione of t' h'e par'ts; a rockinen ber; yielding means for moving the rock member in one direction;- means for actuating the lever in one direction to move" the same ou't of thepath of the movable nembery'apart, -connected' with 1 the Iev'er 'a-ctuating means, in the path of the rock member; whereby the rock member during a portion of'its movement-will in-part move the'lever actuating means.

8."In* a makeand break mechanism of th characterdescribed having 'twooperative parts a movable member for forming a connection between'the parts; means for moving said member in one direction; a mechanism for applying friction to one of the parts; a rock memberf; a link between the rockiniember and friction mechanism; a part'connected with the said moving means that is engaged'by and actuated by the rock member, during a'portion of its movement. 9. In a make and'br'eak mechanism of the character described having two operative parts; a movable member for forming a connection between the parts; means for actuating the movable member in one direction; a mechanism for applying friction to one oft-he parts, comprising a plurality of arms, a rock member, and 'a link between the rock member and one of the arms; and a part connected with the means for actuating the movable member, which is engaged by 'iand'moved with the rock member during a portion of its movement in one direction. -10. In a-make and break mechanism of the character described having two operative parts; a movablemember for forming a actuating the movable member in one direcpressure Hil tion; a rock: member; and means, that is in part actuated through said rock member, for holding the lever against movement out of the path of the movable member comprising in part a,plate, a portion of which is in the path of, movement of the rock member and is engaged and moved thereby when the rock member is moving in one direction.

11. In a make and break mechanism of the character described having two operative parts; a movable member for forming a connection between the parts; mechanism for applying friction to one of the parts; means for positively operating the movable member in one direction a member for actuating both the last mentioned mechanism and means, having a slip joint connection with the means for, operating the movable member.

12. In a make and, break. mechanism. of the character described having two operative parts; a movable-member for forming a connection between the parts; lever means for moving the movable member in one direction; mechanism for applying friction to one of the parts; a rock. member; a positive connection between the rock member and the friction mechanism; and a slip joint connection between said rock member and the lever means.

13. In a make and break mechanism of the character described having two operative parts; amovable member for forming a connection between the parts; a clutch lever which in one of its positions is in the path of the movable member; a rock member; a part connected with the clutch lever; a member on. said part in the path of the rock member; a link connection between the rock member and the friction mechanism; and yielding means for moving the rock member in one direction.

14. In combination with a rotary memher: a shaft member; a movable key mounted in one of the members and adapted to engage the other member to form a rigid connection therebetween; means for positively moving the key in one direction; friction mechanism adapted to engage one of said members, comprising in part two arms, one end of one of which is held in a fixed position, and the end of the other arm is free; and means, as toggle mechanism, for applying pressure to the end of the free arm, and through itfriction to the partwith which the arms are engaged.

15. In combination with a rotary memher; a shaft member; a movable key mounted in, one of the members and adapted to engage the other member to form a rigid connection therebetween; means for positively moving the key in one direction; friction mechanism adapted to engage one of the members, comprising in part two arms,

one end of. one of, hich eld n, fixed position, and the end of the other arm is free; and means, as toggle mechanism, for applyingpressure to the. end of the last mentioned arm,'and through it friction to the parts with which the arms are engaged; and yielding means for moving the toggle mechanism in one direction.

16. In combinationwith a rotary member; a shaft member; amovable key mounted in one of the members, and'adapted to engage the other member to form a rigid connection therebetween; means for positively moving the key in one direction; friction mechanism adapted to engage one of the members, comprising in part two arms, one end ofone of which is held in a fixed position, and the end of the'otherarm is free; and means, as toggle mechanism, for applying pressure to the end of the last mentioned arm, and, through it friction to the part with which the arms are engaged; yieldingmeans fonmoving thetogglecmechanism i'n, one, direction; and means for drawing thelclntch lever out of the path of movement of the key during a portion of the operation of the toggle mechanism, the sequence. of operations of the toggle mechanism being such as to first actuate the friction mechanism and then the clutch IeVenduring-a single movement of the toggle mechanism in one direction.

17. In combination with a rotary memher; a shaft member; a movable key mounted in one of the members, and adapted to engage the other. member to form a rigid connection therebetween; means for positively moving the key'in one direction; friction mechanism adapted to engage one of the members, comprising in part two arms, one end of: one of which is held in a fixed position, andthe end of the-other arm is free; and means, as toggle mechanism, for applying pressure to the endof the last mentioned arm, and through it friction to the part with which the arms are engaged; yielding means for moving thetoggle mechanism in one direction; and means for drawing the clutch lever out of the path of the movement of the key during a portion of the operation of the toggle mechanism, the sequence of operations of the toggle mechanism being such as to first actuate the friction mechanism and then the clutch lever, during a single movement of the toggle mechanism in vone direction, and during the movement of the toggle mechanism in the opposite direction, the friction mechanism is first actuated and then the clutch lever.

l8. Incombination with a rotary member; a shaft member: a movable kev mounted in one of the members and adapted to engage the other member to form a rigid connection therebetween; means for positively moving the key in one direction; friction mechanism adapted to engage. one of the members, comrising n Bart. two armsone end, of. one f which is held in a fixed position, and the end of the other arm is free; and means, as toggle mechanism, for applying pressure to the. end of the last mentioned arm, and through it friction to the part with which the arms are engaged; yielding means for moving the toggle mechanism in one direction; and means for drawing the clutch lever out of the path of movement of the key during a portion of the operation of the toggle mechanism, the sequence of operations of the toggle mechanism being such that while moving in one direction, the fric- BEST AVAlLABLE COP tion mechansm is first applied and then the key moved so as to break the connection between the rotary and shaft members, and while the tog le mechanism is moving in the opposite irection the friction mechanism is first released and then the key is moved to such position that it forms a rigid connection between the rotary and the shaft members.

In testimony whereof, I have hereunto affixed my signature.

JESSE B. BURTON. 

